Brook



(No Model.) 4 Sheets-Sheet 1.

B. R. SEABROOK & J. R. BROWN. ROCK ORUSHBR.

1%., 593,861. Patented Nov; 16,1897.

E t G. R1 F J G 9% W No Model.) 4 Sheets-Sheet 2. B. R. SEABROOK 8: J. R. BROWN.

' ROCK GRUSHER.

No. 593,861. 0 Patented Nov. 16, 1897.

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ROCK 'CRUSHBR.

Patented Nov. 16, 1897.

Wz'finesaes firenfo/S 4 Sheets$heet 4. B. R. SEABROOK 8v J; R. BROWN. 4

ROGKORUSHER.

Patented-Nov. 16, 1897.

(No Model.)

Vigil ($836.3 fnvenfors I UNITED STATES PATENT QFFICEQ BAGSTER 'R. SE'ABRO K, OF VICTORIA, AND JOHN R. BROWN, or HARRISON HOT SPRINGS, OANADA.

ROCK-CRUSHER.

SPECIFICATION forming part of Letters Patent No. 59 3,861, dated November 16, 1897.

Application filed March 20, 1897. "Serial No. 628,506. (No model.)

To all whom it may concern:

Be it known that we, BAGSTER ROADS SEA- BROOK, of the city of Victoria, Vancouver,

and JOHN REITTER BROWN, of Harrison Hot- Springs, New Westminster, Province of British Columbia, Canada, have invented certain new and useful Improvements in Rock- Crushers, of which the following'is a specification.

The object of our invention is to devise a light, strong, and efficient rock-crusher which will reduce the rock both by shearing and crushing with but a comparatively small consumption of-power.

With this object in view our invention consists ofan upper toothedoscillator and one or more lower toothed oscillators operated from a single lever in proximity to suitable toothed beds set on a curve struck from a different center to that of the oscillators, thecenters on which the oscillators swing being at or below the center of the curve on which the oscillator-teeth are set.

Our invention further consists of such details of construction as are hereinafter more particularly described, and then definitely claimed.

Figure 1 is a sectional elevation of our ma chine with one upper and one lower oscillator. Fig. 2 is a side elevation of the same, partially in sect-ion. of the body of the machine, showing the mode of adjusting the oscillators. Fig. a is a sectional elevation of our machine with one upper and two lower oscillators.

In the drawings like letters of reference in dicate corresponding parts in the different spect being simpler than the frame shown in Fig. 1. This frame is suitably shaped to form the beds l3 and O for the upper and lower oscillators, respectively. These beds are pro- 1 vided with toothed die-plates D and E, which Fig. 3 is a front elevation- I in practice will be made detachable from their other, as shown in Figs. 1 and 2, so that the oscillator may be set to produce a greater or less amount of crushing action, as hereinafter described. The oscillator is provided With. toothed die-plates, as shown, with the teeth set substantially in opposite direction to the teeth upon the die-plates of the bed.

I is the lower oscillator, fast upon the shaft J, supported in the bearings K, vertically adjustable on the frame of the machine, as

is providedwith toothed die-plates correhereinafter described. This lower oscillator sponding with the toothed die-plates of the upper oscillator. works upon smallermaterial than the upper oscillator, it is set closer to its bed and the teeth upon the die-plates of the bed and oscillator are finer than upon the upper bed and oscillator. It will be noticed that the oscillators are provided with wedge-shaped tops, whichserve to direct the rock between the die-plates at either side. The die-plates of the upper bed B end at a point substantially above the space between the lower die-plates, so that the crushed rock drops from them between the lower die-plates.

L are arms extending upwardly from the As the lower oscillator.

upper oscillator, and M are arms extending downwardly from the lower-oscillator shaft and rigidly connectedthereto.

N are large vertical levers journaled upon the ends of the shaft G and connected by a shaft 0, upon which are journaled the upper endsof the arms L. The lower ends 'of the levers N are connected by the shaft P, suitably arranged to be roclzed by pitmen from a suitable source of power, or by any other desirable means. The arms M are provided with wrist-pins extending into slots Q,for1ned in the levers N.

From the construction described it follows that the rocking of the levers N will rock the oscillators F and I, the upper oscillator being swung to one side at the same time the lower oscillator is swung to the opposite side, so that while the upper oscillator is crushing rock on one side the space beside the lower oscillator is receiving the crushed ore ready to operate upon it when the levers N make their return swing.

R is the discharge-opening from the lower oscillator.

S are openings through which water may be admitted for wet crushing.

'1 is a hopper connected to the upper portion of the frame to receive the rock and feed it to the crusher. The bearings H are held to the end of the frame, as shown in Fig. 3, by the bolts U, which pass through slots in the bearings, so that the bearings maybe clamped at any desired height. A lug b is formed on the upper edge of the frame and a similar lug c on each bearing. An adjusting-screw d passes through these lugs and serves to adjust the bearing to any desired point, after which it may be clamped by means of the bolts U. The lower bearingplate is constructed in substantially the same manner as shown. By the side of each plate we form a scale, so that each end of each oscillator may be adjusted to correspond with the other end, and the relative positions of the oscillators to their beds may be seen at a glance. To insure steadiness, a portion e of each bearing is fitted into a slot in the ends of the frame. By thus making the oscillators vertically adjustable the machine may be set to operate upon rock of any desired size, or set to turn out the crushed product of any degrees of fineness.

In Fig. 4 we show two lower oscillators, a wedge-shaped screen V being located below the upper oscillator and its bed to discharge the crushed rock upon the lower oscillators. The screen V permits the fine parts of the crushed rock from the upper oscillator to fall through into the opening V, from whence it may be discharged by any suitable chute.

The arms M of the lower oscillators are connected by the cross-bars M, each of which has a wrist-pin connected thereto to engage with the slot Q upon the corresponding lever N. Thus both lower oscillators are moved simultaueouslyby the lever N, as is the single oscillator shown in Fig. 1. This form is preferable in many respects, as the large upper oscillator is apt to crush more rock than can be quickly and economically dealt with by a single small lower oscillator. To further relieve the work upon the lower oscillator, we form the top of each of a curved screen B, which permits the finer crushed material to pass into the interior of each oscillator and thence through the openings 0 to the discharge.

When the oscillators are set as in Fig. 1, there are three reducing actions upon the rock fed to the crusher during each half of the swing. The rock when caught between the teeth at the upper part of the bed and the oscillator is subject to a shearing action, which drives them in a vertical plane. They are carried down and caught between the teeth at the lower part of the oscillator and the teeth toward the upper part of the oscillator and are subjected to a cross-shearing strain. As they are carried still farther toward the lower part of the toothed die-plates of the bed the rock is subjected to a crushing action, as when the oscillator is swung the teeth at its upper portion approach much more closely to the teeth at the lower portion of the bed than to the teeth at the upper portion. By the time this action has taken place the oscillator swings in the opposite direction, which changes the position of the rock in the crusher ready for the next action. When any one set of the oscillators is crushing, the teeth swings well past the lower end of the die-plate of the bed and carry the crushed material away rapidly to be acted upon by the lower oscillators, which reduce the material to a finer condition. If the oscillator be swung on a point below the center of the curve from which its teeth are set, as in Fig. 4, or if the oscillator be swung on the lower bearing, (shown in Fig. 1,) the crushing action will be much greater in proportion to the shearing action, as the upper portion of the oscillator swings much more rapidly toward the bed-plate. This crushing action requires the use of greater power and greater strength of parts, but produces less wear upon the die-plates as the rock is crushed upon itself.

From the above description it will be seen that we have produced a very simple, efiicient, and convenient rock-crusher which will take in quarry-rock of any required size and reduce it to almost any necessary degree of fineness, as the machine may be adjusted. From the mode of construction and operation of the oscillators there is no great or undue shock on the machine while in motion, making great saving in wear of dies and results in great economy of power, the absence of undue shock also resulting in economy of weight in proportion to the work accomplished. As the machine is made in sections, it is very convenient for transportation in rocky and mountainous countries. The machine is also entirely automatic, requiring no attention, as it can be connected directly under a rock-bin and cannot clog by overfeeding. \Ve find that this machine crushes the rock in very evenly-shaped cubical pieces rather than in prismatic or other oblong shapes. It will be seen that the machine can also be made to crush with one side only instead of with two sides, as here described and shown.

\Vhat we claim as our invention is-- 1. In a rock-crusher, a curved bed, in combination with an oscillator suitably journaled on a shaft carried by the frame of the machine; an arm or arms connected to the oscillater and one or more levers, each suitably r ally connected at one end to an upper-osciljournaled on the oscillator-shaft and pivotally connected at one end to an oscillator-arm, substantially as and for the purpose specified.

2. In a rock-crusher, an upper curved bed and a lower curved bed communicating therewith, in combination with an upper oscillator suitably journaled on a shaft carried in bearings on the frame of the machine, a lower oscillator fast on a shaft suitably journaled on the frame of the machine; an arm or arms connected to the upper oscillator, and extend ing upwardly threfrom an arm or arms rigidly connected to the shaft-of the-lower oscillator, and one or more levers, each suitably jou rnaled on the upper-oscillator shaft, pivotlator arm, and adapted to rock the lower-oscillator arm or arms, substantially as and for the purpose specified.

3. In a rock-crusher, an upper curved bed and two lower curved beds communicating therewith; in combination with an upper oscillator suitably journaled on a shaft carried.

in hearings on the frame of the machine; two lower oscillators fast on shafts suitably journale'd on the frame of the machine; an arm or arms rigidly connected to the upper oscillator and extending upwardly therefrom; an arm or arms rigidly connected to one or both of the lower-oscillator shafts; one or more levers each suitably journaled on the upper-oscillator shaft, pivotally connected at one end to an upper-oscillator arm; a link connecting each pair of the arms of the lower-oscillator shafts, and a pin upon a link adapted to engage in a slot in one of the said levers, substantially as and for the purpose specified.

4. In a rock-crusher, an upper curved bed and a lower curved bed communicating therewith, in combination with an upper oscillator suitably journaled on a shaft carried in bearings on the frame of the machine; a lower oscillator fast on a shaft suitably journaled in bearings vertically adjustable on the frame of the machine; an arm or arms connected to the upper oscillator and extending upwardly therefrom, an arm or arms rigidly connected to the shaft of the lower oscillator, and one or more levers, each suitably journaled on the upper-oscillator shaft, pivotally connected at one end to an upper-oscillator arm, and ad apted to rock the lower-oscillator arm or arms, substantially as and for the purpose specified.

5. In a rock-crusher, an upper curved bed and a lower curved bed communicating therewith, in combination with a suitably-jourjournaled upper oscillator; two suitably-journaled lower oscillators; means for rocking the said oscillators; a wedge-shaped screen located below the upper oscillator and above a suitable chamber, and screens covering the top of one or both lower oscillators,dischargeopenings being formed in one or both lower oscillators and in the bottom of the machine below each of the said oscillators, substantially as and for the purpose specified.

7. In a rock-crusher a frame having formed therein two curved beds located one above the other so that the material discharged from one falls in the other, two shafts journaled in said frame one above the other, oscillators journaled on said shafts, arms extending from said oscillators, and means for rocking the said arms, substantially as and for the purpose specified.

Victoria, February 11, 1897.

BAGSTER R. SEABROOK.

. JOHN R. BROWN. In presence ofa G. H. BARNARD, H. A. TURNER. 

